08-24-2018, 09:14 AM
Not sure if it helps but my gauge for the SUPPLY air pressure only starts working at 60 PSI, from 0-60 you don't see any movement on the gauge, not sure if it is by design or if I have a leak but it has been always like that (from PO).
Probably you noticed it when you turned on the heating controls but it might have been just a coincidence.
Probably you noticed it when you turned on the heating controls but it might have been just a coincidence.
1988 40ft Newell Classic
8V92 TA Mechanic
Allison 740 (4 speed)